FFTInterleaved

Applies a 2^N-sample Fast Fourier Transform (FFT), and it unswizzles the result so that the samples are arranged by increasing frequency. Audio is first deinterleaved if it is multichannel.

Syntax

void DSP::FFTInterleaved(  
         XMVECTOR* __restrict pReal,  
         XMVECTOR* __restrict pImaginary,  
         const XMVECTOR* __restrict pUnityTable,  
         const size_t uChannelCount,  
         const size_t uLog2Length  
)  

Parameters

pReal   _Inout_updates_(((1 << uLog2Length) * uChannelCount) / 4)
Type: XMVECTOR* __restrict Real components of the FFT. It must have at least (1 << uLog2Length × uChannelCount) ÷ 4 elements. pImaginary   _Out_writes_(((1 << uLog2Length) * uChannelCount) / 4)
Type: XMVECTOR* __restrict Imaginary components of the FFT. It must have at least (1 << uLog2Length × uChannelCount) ÷ 4 elements. pUnityTable   _In_reads_(1 << uLog2Length)
Type: XMVECTOR* __restrict Unity table to be used by the FFT. It must have at least (1 << uLog2Length) elements. uChannelCount   _In_
Type: size_t Number of channels in the FFT. uChannelCount must be within [1, 6]. uLog2Length   _In_
Type: size_t Base-2 log of the FFT length in frames. uLog2Length must be within [2, 9].

Return value

Type: void None.

Remarks

The memory pointed to by the parameters pReal, pImaginary, and pUnityTable must not overlap. Use the FFTIntializeUnityTable function to assign a value to the pUnityTable parameter. The FFTInitializedUnityTable function initializes a unity roots lookup table used by FFT functions.

Requirements

Header: xdsp.h Supported platforms: XBOX One family consoles and XBOX Series consoles

(all) API references

Error codes

Audio API reference

Chat API reference

Developer kit only API reference

Graphics API reference

Input API reference

Lighting API reference

Networking API reference

XBOX PC remote iteration API reference

System API reference

Tools API reference

Windows device portal REST API reference

XBOX services API reference

MicrosoftGame.config reference

FFTInterleaved

FFTInterleaved

Syntax

Parameters

Return value

Remarks

Requirements

See also

​FFTInterleaved

​Syntax

​Parameters

​Return value

​Remarks

​Requirements

​See also

FFTInterleaved

Syntax

Parameters

Return value

Remarks

Requirements

See also